Surname meaning for "Lucas"

English, French, Spanish, Portuguese, Dutch, etc.: from the
Latin personal name Lucas (Greek Loukas) ‘man from
Lucania’. Lucania is a region of southern Italy thought to have been
named in ancient times with a word meaning ‘bright’ or ‘shining’.
Compare Lucio. The Christian name owed its enormous popularity
throughout Europe in the Middle Ages to St. Luke the Evangelist, hence
the development of this surname and many vernacular derivatives in
most of the languages of Europe. Compare Luke. This is also
found as an Americanized form of Greek Loukas.